First, getting the egg from a female dog can be troublesome because dogs don't experience regular ovulation cycles like humans. (science.howstuffworks.com)
Without regular ovulation, you won't have a regular period — your flow could come every few months or be absent for several, then show up only to go into hiding again. (health.com)
That's a problem because regular ovulation is not just for making a baby. (larabriden.com)